Clamp for column-molds.



T. F. NOVY.

CLAMP FOR COLUMN MOLDS.

APPLICATION mu) MAR. l9. I917.

Patented Oct. 8, 1918.

THEODORE F. NOVY, OF CHICAGO, ILLINOIS.

CLAMP FOR COLUMN-MOLDS.

Specification of Letters Patent.

Patented Oct. 8, 191

Application filed March 19, 1917. Serial No. 155,663.

To all whom it may concern: i

Be it known that I, THEODORE F. NovY, a citizen of the United States,and resident of Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Clamps for Column-Molds, of which the following is a full, clear and exact specification.

This invention relates to improvements in clamps for column molds, thatis to say clamps for producing a water tight oint between thelongitudinally meeting edges of the mold for preventing the formation ofa seam and scams lengthwise of the column, and for which purpose thejoint is provided with outwardly projecting flanges heretoforenecessarily notched for securing the clamp in its operative position andfor its subsequent detachment.

The prime object of this invention broadly stated is to provide a columnmold with a clamp, which is adapted to dispense with the notching of theflanges and so constructed that it may be conveniently attached anddetached in the quickest possible time, and which when in its operationwill ellectually prevent any leakage whatever at 1 the joint.

A further object of my invention is to provide a column mold with aclamp for securing together and tightening the longitudinal joint of amold, the opposing jaws of which are adjustable on a hook shaped boltforming one member of the tightening device, and which at the same timeis adapted to prevent the disconnection of the jaws from each other, andwhereby a single pair of adjustable clamps are adapted to extend fromend to end of a column mold of any given height, and this whethercontinuous or in sections.

Another ob ect-of my invention 1s to provide a column mold clamp with'means adapted to form a bearing for the hook bolt, and at the same timelimit the closing movement of the jaws, and f rm a stop preventlng atwist or tortional movement of the jaws, and maintaining the opposingfaces in parallel planes.

With these ends in view, my invention finds embodiment in certainfeatures of novelty in the construction, combination and arrangement ofparts by which the said objects and certain other objects are attained,

all as hereinafter fully described with refer-' ence to the accompanyingdrawings, and more particularly pointed out in the claims.

In said drawing:

F igure 1 illustrates in front elevation a clamp for a mold in which myinvention finds its embodiment.

Flg. 2 is a transverse section on the line 22 of Fig. 1.

Fig. is a detail side elevation of the clamp 1n its operative positionupon the omt of a column mold.

F1g. 4 is an enlarged detail front elevation of the clamp in itsoperative position, and

Fig. 5 is a detail transverse section showing the form of the ointconnection between the longitudinal edges of the mold.

Similar characters of reference indicate the same parts in the severalfigures of the drawing.

For forming a joint between the longitudinal edges of a' column mold themetal of one edge portion 6 is bent upon and against itself as indicatedat 7, and thence at a right angle to form a flange 8.

The metal of the opposing portion 9 is provided with an outward bond 10,whence the metal projects as at 11 in a plane parallel with the surfaceof the bent member 7, and merges into a flange 12 projecting at a rightangle thereto, and which in turn is provided with a short right anglebend 13 along its outer edge adapted to overlap the edge of the flange8.

The outward bend 10 of the member 8 provides a stop for the opposingedge of the portion 6.

WVith the edges of the mold thus constructed it will be seen that notonlv is the inner surface of the mold substantially continuous, but thaton the compression of the flanges a tight joint may be formed-preventingany leakage from the mold tending to produce either a projection orgroove in and longitudinally of the column molded therein.

As a means for producing and maintaining such a joint my inventionincludes the emplovment of opposing clamping jaws 14 and 15. the lengthof which corresponds with the predetermined height of the column mold,the sha ks 16 and 17 of which jaws project laterally in planes parallelwith the clamping faces of the jaws to which they are riveted, asindicated at 18, or otherwise rigidly secured.

' therefore against a rocking movement when 7 Copies of this patent maybe obtained for they are tightened against the flanges, and

.to whichthey would otherwise have a tend- I ency owing to the fact thatfor convenience of operation the jaws are supported and adjustable upona hook bolt 20, the'bearing portion in which for the jaws is locatedsome distance outwardly from both jaws.

For, convenience of assembling the jaws, or if need be disconnectingthem, the shank of the hook bolt is screwthrea-ded and provided with anut 21.

The hook bolt 20 and its hook portion 22 is adapted to confine a wedge28, the opposing edges of which respectively bear against the hook andagainst the shank 17, and between which when oneeinserted, the Wedge issupported, and on being forced downwardly to a tightened position, movesthe clamps toward and tightens the flanges of the mold between them.

It is now to be observed that the width of the clamping jaws correspondswith the width of the flanges of the mold to be clamped between them,and that notwithstanding the force for operating the clamping jaws is'applied outwardly therefrom, and as must be in order that their widthmaycorrespond with the predeterminedwidth of the flange, the clampingsurface of the jaws is compelled to move in parallel planes and therebyuniformly compress and tighten the flanges throughout their length. 7

vThe construction of a clamp of my inven tion as hereinshown anddescribed provides a means for forming a water tight joint betweenthesections of a mold,.preventing the formation of a bead or seam on acement column, the removal of which, as must be, mars the appearance ,ofthe. column, and a clamp which is not only strong and durable, but whichmay be secured in its operative position and removed therefrom in" thequickest possible time, with the exercise of the least amount of skillon the part of the operator, and whereby the cost ofits con structionand the time required for erecting the mold in its operative position isreduced to a minimum.

Having described my invention, whatl claim and desire to secure byLetters Patent is:

1. A clamp comprising in combination clamping jaws, a hook-boltprojecting be 7 "shanks said planes throughout tightening of the jaws, ahook-bolt passing through said shanks, and a wedge passingthereth-rough, adapted to tighten the jaws.

A clam-p comprising in combination opposing clamping jaws provided at:the enter ends of their shanks with stops for maintaining parallelism.of the clamping surfaces of the jaws, and a tightening means locatedbetween the jaws and said step.

4. A clamp comprising combination op.- pos-ing jaws, shanks therefor atspaced intervals, one of which is provided with [an inwardly projectingflange adapted to engage opposing shanks and form a stop maintainingtheclamping surfaces .of the jaws in parallel planes in their tightenedoperative position, a hook-bolt passing through said shanks at a pointremoved from the jaws, and a wedge located between one .of said shanksengaging saidhook for closing and tightening the jaws {in theiroperative position.v V

In witness whereof, I have hereunto set my hand and affixed my seai,this 28th day of February, A.'D. 1-917.

THEODORE F. NOVY. i[L.S .j v Witnesses:

M. B, ELS'NER 'JNo. G. ELLIOTT.

five cents each, by {addressing the flogn-missiener or intents,'Washingtcnfl). E3.

